Vise.



PATENTED MAY V12, 1903;; 0. .W. ORVIS.

VISE. APPLICATION FILED JAN. 8, 1903.

:10 MODEL.

I a ttoznegi Patented May 12,1903.

PATENT OFFICE.

CHARLES WILLIAM ORVIS, OF WESTPLAINS, MISSOURI.

VlS E.,

SPECIFICATION fOrming part Of Letters Patent N0. 727,679, dated M83 12, 1903.

Application filed January 8, 1903. Serial No. 138,232. (No model.) I

T0 at whom it m/aty concern.-

Be it known that I, CHARLES WILLIAM ORvIs,a citizen of theUnited States, residing at Westplains, in the county of Howell and State of Missouri, have invented certain new and useful Improvements in Vises; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same, refer ence being bad to the accom panyingdrawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention comprises a vise having parallel jaws, one of which slides to and from the other under the power of a lever acting, by means of a vertically-sliding block, upon inclined planes formed in the jaws, giving a wedge action to close and open the jaws.

The object of the invention is to form an improved device of the kind stated in which,

from the fixed jaw and work in ways 2 formed in the sides of the movable jaw. The

jaws have opposite longitudinal recesses, as.

indicated at 3, in which the block 7 slides vertically when operated by the lever 6, which is conveniently located as a foot-lever. At

each side of each recess are upper and lower inclined ribs 8. These ribs incline downwardly and outwardly from the meeting faces of the jaws, and the upper and lower ribs on each side of the recess and in each jaw project into notches 4*, formed in' upper and lower cross-pieces 4, carried by the block 7. The notchesare properly inclined to receive the ribs,"and in the reciprocation of the block the notches engage and slide along the ribs. This produces a wedge action, which moves the movable jaw at both top and bottom and either closes or opens the jaws, according to downward or upward movement of the lever.

lever.

lower cross-pieces etand consequent upper.

It slides to and from the fixed jaw on guide-arms 2 which project To afford an adjustable fulcrum for the lever, a fulcrum-block 5 is attached :to the fixed jaw and has a notched slot, as indicated at 5*, into any of which notches the end of the lever may be put, which action is permitted by the swinging link 6*, connecting the lever and the block 7. The vertically-adjustable fulcrum allows the jaws to be set at various distances apart, so as to be adaptable to objects of difierent sizes, and the parallel movement of the jaws makes the vise particularly effective ,for .holding squared stuff, such as boards or timbers, which with pivoted-jaw vises are pinched at one edge only. The wedge action above indicated makes a quick movement, quicker than a screw. When in use, the device may, if necessary, be held closed by foot-pressure on the The purpose of having upper and and lower wedge engagement is to make the movement equal at both top and bottom of the movable jaw, thereby maintaining parallelism and preventing pinching or binding on the guide-arms.

What I claim as new, and desire to secure by Letters Patent, is

1. In a vise, the combination with jaws hav ing opposite longitudinal recesses'and inclined ribs beside the recesses, of a wedgeblock sliding vertically in the recesses and 'havingnotches receiving the ribs, and an operating-lever connected to the block.

2. In a vise, the combination with a fixed jaw, of a movable jaw parallel-thereto, a vertically-slidable wedgeblock having upper andlower engagementiwith the jaws, so as us maintain the parallelism, and means to operate the wedge-block.

3. In a vise, the combination with fixed and movable parallel jaws having opposite longitudinal recesses and upper andlower inclined ribs projecting into the recesses of a block slidable vertically in the recesses and engaging the ribs, and an operating-lever connected to the block. 1

In testimony whereof .I affix my signature in presence of two witnesses.

CHARLES WILLIAM ORVIS.

Witnesses i W. A. ATKINSON, J. L. PENN. 

